scholarly journals An Efficient Spectral Amplitude Coding (SAC) Technique for Optical CDMA System using Wavelength Division Multiplexing (WDM) Concepts

2017 ◽  
Vol 8 (7) ◽  
Author(s):  
Hassan Yousif ◽  
Medien Zeghid
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Cdma ◽  
Spectral Amplitude ◽  
Cdma System ◽  
Wavelength Division ◽  
Spectral Amplitude Coding

scholarly journals Packet Switching Strategy and Node Architecture of Extended Spectral-Amplitude-Coding Labels in GMPLS Networks

2019 ◽  
Vol 9 (7) ◽  
pp. 1513
Author(s):  
Kai-Sheng Chen
Keyword(s):  
Wavelength Division Multiplexing ◽  
Multiple Access ◽  
Packet Switching ◽  
Multiple Access Interference ◽  
Spectral Amplitude ◽  
Network Nodes ◽  
Wavelength Division ◽  
Node Architecture ◽  
Spectral Amplitude Coding ◽  
Code Division Multiple

We present packet switching applications based on extended spectral-amplitude-coding (SAC) labels in generalized multi-protocol label switching (GMPLS) networks. The proposed approach combines the advantages of wavelength-division multiplexing (WDM) and optical code-division multiple access (OCDMA). The extended SAC labels preserve the orthogonal property to avoid the effect of multiple access interference (MAI) shown at the decoder. We investigate the node architecture of label generation/recognition based on arrayed waveguide grating (AWG). Combining cyclic-shifted maximal length sequence (MLS) codes with the wavelength routed property of AWG simplifies the node structure. The simulation results show that the proposed labels achieve good performances against receiver noise due to the low average cross-correlation values. Under a given bit-error-rate (BER), the switching efficiency of the extended SAC labels outperforms the previous OCDMA schemes, as the network nodes are capable of processing a large number of labels simultaneously.

A Kind of Large-capacity Codes for AWG-based Spectral-amplitude-coding Optical CDMA System

2005 ◽  
Vol 26 (2) ◽  
Author(s):  
Yu Xin ◽  
Chongxiu Yu ◽  
Qiang Wu ◽  
Wenxiao Zheng ◽  
Zhuo Chen
Keyword(s):  
Optical Cdma ◽  
Spectral Amplitude ◽  
Cdma System ◽  
Large Capacity ◽  
Spectral Amplitude Coding

A Review on Successive Interference Cancellation Scheme Based on Optical CDMA Network

2014 ◽  
Vol 35 (4) ◽  
Author(s):  
N. Alsowaidi ◽  
T. Eltaif ◽  
M. R. Mokhtar
Keyword(s):  
Interference Cancellation ◽  
Multiple Access ◽  
Direct Detection ◽  
Multiple Access Interference ◽  
Successive Interference Cancellation ◽  
Optical Cdma ◽  
Spectral Amplitude ◽  
Cdma System ◽  
Spectral Amplitude Coding ◽  
Code Division Multiple

AbstractDue to various desirable features of optical code division multiple access (OCDMA), it is believed this technique once developed and commercially available will be an integral part of optical access networks. Optical CDMA system suffers from a problem called multiple access interference (MAI) which limits the number of active users, it occurs when number of active users share the same carriers. The aim of this paper is to review successive interference cancellation (SIC) scheme based on optical CDMA system. The paper also reviews the system performance in presence of shot noise, thermal noise, and phase–induced intensity noise (PIIN). A comprehensive review on the mathematical model of SIC scheme using direct detection (DS) and spectral amplitude coding (SAC) were presented in this article.

Spectral amplitude-coding optical CDMA system using Mach-Zehnder Interferometers

2005 ◽  
Vol 23 (4) ◽  
pp. 1543-1555 ◽  
Author(s):  
Cheing-Hong Lin ◽  
Jingshown Wu ◽  
Hen-Wai Tsao ◽  
Chun-Liang Yang
Keyword(s):  
Optical Cdma ◽  
Spectral Amplitude ◽  
Cdma System ◽  
Spectral Amplitude Coding
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